\begin{tikzpicture}
    \tkzDefPoints{0/0/B, 3.5/0/E, 1.8/2/A,  0.8/0/C, 2.8/0/D}

    \tkzDrawPolygon(A,B,E)
    \tkzDrawSegments(A,C  A,D)
    \tkzLabelPoints[above](A)
    \tkzLabelPoints[below](B,C,D,E)
\end{tikzpicture}

